1. Alarm by sounds & light: Alarm by sounds and light when conform to condition. 2. Network interface: Could be connect local area network and support multi-terminal check baggage at same times 3. Safety ray: Transmit ray under automatic control, avoids the miss 4. Image monitoring for user-friendly: The monitor use fold, rotary system, operators adjusts the monitor position willfully according to own need, reduces wearily. 5. Simple operation by mouse: Without keyboard and work table, control by mouse, save space. 6. Turn off by a key control: Turn off the machine only need one step: Revolves the key. The equipment automatic security close-down, does not need complex many steps, is simpler. 7. Eagle-eye: Could be expediently observing enlargement area. 8. Estimate malfunction by self: Automatic estimate malfunction and prompt message, helpful for the maintenance.